# US 2014/0190807 A1 · Touch panel and a manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190807 A1 - Document ID: US20140190807A1 - Status: Published application - Kind: A1 - Application number: 13/733,907 - Filed: 2013-01-04 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: TPK Touch Solutions (Xiamen) Inc. - Inventors: Yanjun Xie; Silu Yu; Enshi Shi; Yau-Chen Jiang - Web page: https://patentgrep.com/patent/US20140190807A1 ## CPC - G06F 3/0443: {using a single layer of sensing electrodes} - H01H 9/0264: {Protective covers for terminals} - H01H 11/00: Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88) - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - Y10T 29/49105: Switch making - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present disclosure relates to a touch technology, and more particularly, to a touch panel and a manufacturing method the same. A touch panel is provided, comprising an inductive electrode layer and a patterned protective layer covering the inductive electrode layer; wherein formative pattern of the patterned protective layer is identical to that of the inductive electrode layer. The present disclosure also provides a manufacturing method for touch panels. A touch panel and a manufacturing method the same are provided in the present disclosure, in which the patterned protective layer is used for covering the inductive electrode layer to isolate the inductive electrode layer from oxygen and overcome the influence of oxygen on the diamond resistance changes of conductive materials under the condition of high-temperature baking, thereby enhancing the accuracy of touch positions recognized by touch panel. ## Claims ### Claim 1 A touch panel, comprising: an inductive electrode layer; and a patterned protective layer covering the inductive electrode layer, wherein formative pattern of the patterned protective layer is identical to that of the inductive electrode layer. ### Claim 2 (depends on 1) The touch panel of claim 1, further comprising a substrate having a touch region and a peripheral region surrounding the touch region, wherein the inductive electrode layer is disposed on the touch region. ### Claim 3 (depends on 2) The touch panel of claim 2, further comprising: a plurality of lapping endpoints distributed at an edge of the touch region, wherein said lapping endpoints are electrically connected with the inductive electrode layer. ### Claim 4 (depends on 3) The touch panel of claim 3, further comprising: a plurality of peripheral circuits distributed on the peripheral region of the substrate and electrically connected with the lapping endpoints. ### Claim 5 (depends on 4) The touch panel of claim 4, wherein the patterned protective layer further covers the peripheral circuits and has identical formative patterns to the said peripheral circuits. ### Claim 6 (depends on 4) The touch panel of claim 4, wherein the peripheral circuits are made of metallic or transparent conductive materials. ### Claim 7 (depends on 1) The touch panel of claim 1, wherein the inductive electrode layer comprises: a plurality of first conductive units distributed along a first axis, wherein each two first conductive units are electrically connected with a corresponding first conductive line; a plurality of second conductive units formed along a second axis and a plurality of second conductive lines connected with the second conductive units; wherein the first conductive units and the second conductive units are mutually and electrically insulated. ### Claim 8 (depends on 7) The touch panel of claim 7, further comprising an insulating block set between the first conductive line and the second conductive line. ### Claim 9 (depends on 8) The touch panel of claim 8, wherein the insulating blocks are made of transparent insulating materials. ### Claim 10 (depends on 2) The touch panel of claim 2, wherein the substrate is one or more of a transparent glass substrate, or a plastic substrate, and wherein materials of the plastic substrate comprise of one or more of PET, PC, PE, and PMMA. ### Claim 11 (depends on 7) The touch panel of claim 7, wherein the first conductive units, the second conductive units, and the second conductive lines are made of transparent conductive materials, and wherein the first conductive lines are made of metals. ### Claim 12 (depends on 7) The touch panel of claim 7, wherein the first conductive units, the second conductive units, the first conductive lines, and the second conductive lines are made of transparent conductive materials. ### Claim 13 (depends on 1) The touch panel of claim 1, wherein the patterned protective layers are made of transparent insulating materials. ### Claim 14 A manufacturing method for a touch panel, comprising the step of: baking an inductive electrode layer and a patterned protective layer covering the said inductive electrode layer, wherein formative pattern of the patterned protective layer is identical to that of the inductive electrode layer. ### Claim 15 (depends on 14) A manufacturing method for the touch panel of claim 14, wherein the step of baking the inductive electrode layers and the patterned protective layers at the same time is conducted at a high temperature. ### Claim 16 (depends on 14) A manufacturing method for the touch panel of claim 14, wherein, prior to the step of baking the inductive electrode layers and the patterned protective layers, said method further comprises the steps of: coating an inductive layer on touch region of a substrate; coating a protective layer on the inductive layer; patterning the protective layer to form the patterned protective layer; and patterning the inductive layer to form the inductive electrode layer. ### Claim 17 (depends on 16) A manufacturing method for the touch panel of claim 16, wherein patterning the protective layers and patterning the inductive layers are conducted synchronously. ### Claim 18 (depends on 16) A manufacturing method for the touch panel of claim 16, wherein, prior to the step of coating an inductive layer on the touch region of the substrate, the method comprises the steps of: forming a first conductive line; forming a plurality of lapping endpoints at edge of the touch region of the substrate; and forming a plurality of peripheral circuits on the peripheral region of the substrate, wherein the peripheral circuits are electrically connected with the lapping endpoints, and wherein the lapping endpoints are electrically connected with the inductive electrode layers. ### Claim 19 (depends on 18) A manufacturing method for the touch panel of claim 18, wherein the first conductive lines, the lapping endpoints, and the peripheral circuits are made of metallic or transparent conductive materials synchronously. ### Claim 20 (depends on 18) A manufacturing method for a touch panel of claim 18, wherein the step of farming the inductive electrode layers further comprises the steps of: forming a plurality of first conductive units along a first axis, wherein each two first conductive units are electrically connected with the corresponding first conductive lines; forming a plurality of second conductive units along a second axis and a plurality of second conductive lines connected with the second conductive units, wherein the first conductive units and the second conductive units are mutually and electrically insulated. ### Claim 21 (depends on 20) A manufacturing method for a touch panel of claim 20, wherein the first conductive units and the second conductive units are mutually and electrically insulated by setting an insulating block between the first conductive line and the second conductive line. ### Claim 22 (depends on 18) A manufacturing method for a touch panel of claim 18, wherein the protective layer is coated on the inductive layer while being coated on the peripheral circuits, and wherein the protective layer is patterned while a corresponding patterned protective layer is being formed on the peripheral circuits, further wherein the patterned protective layer covers the peripheral circuits and has identical formative pattern to the peripheral circuits.